Thank you Ray. I miss some shot because of the slow fps but it does ok. I did just get a 7dII and have tried it a little, that 10 fps is amazing compared to the 5 I've been used to. I just need to practice with it some more.
I don't think you need much more practice as birds in flight at a distance are difficult to capture, even when you have the option to crop the photo, these look nicely centralized
These are cropped pretty good but with the high megapixel of the 5dsr they still turn out ok. The light wasn't good enough yet to put the 1.4tc on. That would've been nice to have that extra reach.